Unbalanced Forces Chap 2 Lesson 3 Newtons Second

Unbalanced Forces, Chap 2 Lesson 3 Newton’s Second Law of Motion, pg 109 -110 Vocabulary review: 1) When an object changes ________or _______, its Speed________________________ velocity changes, and the object is accelerating. The units of ___________________________ are meter/second 2 2) When the __________ is zero, the Velocity ________________________ is zero. When the acceleration of an ___________________________ object is zero, the _________ is constant. In other words, only ________________ forces cause the Acceleration ______________________ motion of objects to ______________________________________________________ To Summarize: Unbalanced Forces and Velocity, pg 106 -108 _____1) When an unbalanced force acts on a resting object, the object ______________ a) remains at rest b) accelerates in the direction of the force. 1) Whenever an object’s speed or direction changes, a(n) _______________ force must be acting on the object. a) When a resting object is acted on by an unbalanced force, the object will _______________ in the direction of the unbalanced force. b) An object’s speed will _________ when a net force acts in the same direction of the object’s motion. c) An object’s speed will ___________ when a net force acts in the opposite direction of the objects motion. d) Unbalanced forces can cause an object to speed up, slow down or change________________. _____2) A net force applied in the same direction as an object’s motion causes the objects to ___________. a) speed up b) slow down _____3) A moving object that changes direction is being acted on by a(n) _______________. a) balanced force b) unbalanced force